I also have extra focal speakers from a previous setup. Those are 2 - 826v towers and 4 714v towers.

I guess I would want to use the 705v bookshelves as the front heights and could I do a pair of the 714v towers as my new rear speakers? i would have to stand them on something to get at the right height (rears).

OR should I keep my bookshelves as rears and just buy another set for the front heights?

I also have extra focal speakers from a previous setup. Those are 2 - 826v towers and 4 714v towers.

I guess I would want to use the 705v bookshelves as the front heights and could I do a pair of the 714v towers as my new rear speakers? i would have to stand them on something to get at the right height (rears).

OR should I keep my bookshelves as rears and just buy another set for the front heights?

any ideas? thanks

Why not start with what you have and you can always upgrade later if it doesn't meet your needs?